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NetBSD/sys/dev/rasops/rasops15.c

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/* $NetBSD: rasops15.c,v 1.7 2000/04/12 14:22:29 pk Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andy Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opt_rasops.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rasops15.c,v 1.7 2000/04/12 14:22:29 pk Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/rasops/rasops.h>
static void rasops15_putchar __P((void *, int, int, u_int, long attr));
#ifndef RASOPS_SMALL
static void rasops15_putchar8 __P((void *, int, int, u_int, long attr));
static void rasops15_putchar12 __P((void *, int, int, u_int, long attr));
static void rasops15_putchar16 __P((void *, int, int, u_int, long attr));
static void rasops15_makestamp __P((struct rasops_info *, long));
#endif
/*
* (2x2)x1 stamp for optimized character blitting
*/
static int32_t stamp[32];
static long stamp_attr;
static int stamp_mutex; /* XXX see note in readme */
/*
* XXX this confuses the hell out of gcc2 (not egcs) which always insists
* that the shift count is negative.
*
* offset = STAMP_SHIFT(fontbits, nibble #) & STAMP_MASK
* destination int32_t[0] = STAMP_READ(offset)
* destination int32_t[1] = STAMP_READ(offset + 4)
*/
#define STAMP_SHIFT(fb,n) ((n*4-3) >= 0 ? (fb)>>(n*4-3):(fb)<<-(n*4-3))
#define STAMP_MASK (15 << 3)
#define STAMP_READ(o) (*(int32_t *)((caddr_t)stamp + (o)))
/*
* Initalize rasops_info struct for this colordepth.
*/
void
rasops15_init(ri)
struct rasops_info *ri;
{
switch (ri->ri_font->fontwidth) {
#ifndef RASOPS_SMALL
case 8:
ri->ri_ops.putchar = rasops15_putchar8;
break;
case 12:
ri->ri_ops.putchar = rasops15_putchar12;
break;
case 16:
ri->ri_ops.putchar = rasops15_putchar16;
break;
#endif /* !RASOPS_SMALL */
default:
ri->ri_ops.putchar = rasops15_putchar;
break;
}
if (ri->ri_rnum == 0) {
ri->ri_rnum = 5;
ri->ri_rpos = 0;
ri->ri_gnum = 5 + (ri->ri_depth == 16);
ri->ri_gpos = 5;
ri->ri_bnum = 5;
ri->ri_bpos = 10 + (ri->ri_depth == 16);
}
}
/*
* Paint a single character.
*/
static void
rasops15_putchar(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
int fb, width, height, cnt, clr[2];
struct rasops_info *ri;
u_char *dp, *rp, *fr;
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
/* Catches 'row < 0' case too */
if ((unsigned)row >= (unsigned)ri->ri_rows)
return;
if ((unsigned)col >= (unsigned)ri->ri_cols)
return;
#endif
rp = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
height = ri->ri_font->fontheight;
width = ri->ri_font->fontwidth;
clr[1] = ri->ri_devcmap[((u_int)attr >> 24) & 0xf];
clr[0] = ri->ri_devcmap[((u_int)attr >> 16) & 0xf];
if (uc == ' ') {
int16_t c = (int16_t)clr[0];
while (height--) {
dp = rp;
rp += ri->ri_stride;
for (cnt = width; cnt; cnt--) {
*(int16_t *)dp = c;
dp += 2;
}
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc * ri->ri_fontscale;
while (height--) {
dp = rp;
fb = fr[3] | (fr[2] << 8) | (fr[1] << 16) | (fr[0] << 24);
fr += ri->ri_font->stride;
rp += ri->ri_stride;
for (cnt = width; cnt; cnt--) {
*(int16_t *)dp = (int16_t)clr[(fb >> 31) & 1];
fb <<= 1;
dp += 2;
}
}
}
/* Do underline */
if ((attr & 1) != 0) {
int16_t c = (int16_t)clr[1];
rp -= ri->ri_stride << 1;
while (width--) {
*(int16_t *)rp = c;
rp += 2;
}
}
}
#ifndef RASOPS_SMALL
/*
* Recompute the (2x2)x1 blitting stamp.
*/
static void
rasops15_makestamp(ri, attr)
struct rasops_info *ri;
long attr;
{
int32_t fg, bg;
int i;
fg = ri->ri_devcmap[((u_int)attr >> 24) & 0xf] & 0xffff;
bg = ri->ri_devcmap[((u_int)attr >> 16) & 0xf] & 0xffff;
stamp_attr = attr;
for (i = 0; i < 32; i += 2) {
#if BYTE_ORDER == LITTLE_ENDIAN
stamp[i] = (i & 16 ? fg : bg);
stamp[i] |= ((i & 8 ? fg : bg) << 16);
stamp[i + 1] = (i & 4 ? fg : bg);
stamp[i + 1] |= ((i & 2 ? fg : bg) << 16);
#else
stamp[i] = (i & 2 ? fg : bg);
stamp[i] |= ((i & 4 ? fg : bg) << 16);
stamp[i + 1] = (i & 8 ? fg : bg);
stamp[i + 1] |= ((i & 16 ? fg : bg) << 16);
#endif
}
}
/*
* Paint a single character. This is for 8-pixel wide fonts.
*/
static void
rasops15_putchar8(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, so, fs;
int32_t *rp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops15_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops15_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == (u_int)-1) {
int32_t c = stamp[0];
while (height--) {
rp[0] = rp[1] = rp[2] = rp[3] = c;
DELTA(rp, ri->ri_stride, int32_t *);
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
rp[0] = STAMP_READ(so);
rp[1] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
rp[2] = STAMP_READ(so);
rp[3] = STAMP_READ(so + 4);
fr += fs;
DELTA(rp, ri->ri_stride, int32_t *);
}
}
/* Do underline */
if ((attr & 1) != 0) {
int32_t c = STAMP_READ(28);
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = rp[2] = rp[3] = c;
}
stamp_mutex--;
}
/*
* Paint a single character. This is for 12-pixel wide fonts.
*/
static void
rasops15_putchar12(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, so, fs;
int32_t *rp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops15_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops15_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == (u_int)-1) {
int32_t c = stamp[0];
while (height--) {
rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c;
DELTA(rp, ri->ri_stride, int32_t *);
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
rp[0] = STAMP_READ(so);
rp[1] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
rp[2] = STAMP_READ(so);
rp[3] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK;
rp[4] = STAMP_READ(so);
rp[5] = STAMP_READ(so + 4);
fr += fs;
DELTA(rp, ri->ri_stride, int32_t *);
}
}
/* Do underline */
if (attr & 1) {
int32_t c = STAMP_READ(28);
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = rp[2] = rp[3] = rp[4] = rp[5] = c;
}
stamp_mutex--;
}
/*
* Paint a single character. This is for 16-pixel wide fonts.
*/
static void
rasops15_putchar16(cookie, row, col, uc, attr)
void *cookie;
int row, col;
u_int uc;
long attr;
{
struct rasops_info *ri;
int height, so, fs;
int32_t *rp;
u_char *fr;
/* Can't risk remaking the stamp if it's already in use */
if (stamp_mutex++) {
stamp_mutex--;
rasops15_putchar(cookie, row, col, uc, attr);
return;
}
ri = (struct rasops_info *)cookie;
#ifdef RASOPS_CLIPPING
if ((unsigned)row >= (unsigned)ri->ri_rows) {
stamp_mutex--;
return;
}
if ((unsigned)col >= (unsigned)ri->ri_cols) {
stamp_mutex--;
return;
}
#endif
/* Recompute stamp? */
if (attr != stamp_attr)
rasops15_makestamp(ri, attr);
rp = (int32_t *)(ri->ri_bits + row*ri->ri_yscale + col*ri->ri_xscale);
height = ri->ri_font->fontheight;
if (uc == (u_int)-1) {
int32_t c = stamp[0];
while (height--) {
rp[0] = rp[1] = rp[2] = rp[3] =
rp[4] = rp[5] = rp[6] = rp[7] = c;
DELTA(rp, ri->ri_stride, int32_t *);
}
} else {
uc -= ri->ri_font->firstchar;
fr = (u_char *)ri->ri_font->data + uc*ri->ri_fontscale;
fs = ri->ri_font->stride;
while (height--) {
so = STAMP_SHIFT(fr[0], 1) & STAMP_MASK;
rp[0] = STAMP_READ(so);
rp[1] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[0], 0) & STAMP_MASK;
rp[2] = STAMP_READ(so);
rp[3] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[1], 1) & STAMP_MASK;
rp[4] = STAMP_READ(so);
rp[5] = STAMP_READ(so + 4);
so = STAMP_SHIFT(fr[1], 0) & STAMP_MASK;
rp[6] = STAMP_READ(so);
rp[7] = STAMP_READ(so + 4);
DELTA(rp, ri->ri_stride, int32_t *);
fr += fs;
}
}
/* Do underline */
if (attr & 1) {
int32_t c = STAMP_READ(28);
DELTA(rp, -(ri->ri_stride << 1), int32_t *);
rp[0] = rp[1] = rp[2] = rp[3] =
rp[4] = rp[5] = rp[6] = rp[7] = c;
}
stamp_mutex--;
}
#endif /* !RASOPS_SMALL */
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